Comments on: The world of Transcoding http://blogs.gnome.org/uraeus/2008/01/17/the-world-of-transcoding/ Just another GNOME Blogs weblog Wed, 09 Jul 2008 04:11:11 +0000 http://wordpress.org/?v=2.3.3 By: Michael T. Babcock http://blogs.gnome.org/uraeus/2008/01/17/the-world-of-transcoding/#comment-1417 Michael T. Babcock Sat, 09 Feb 2008 21:43:49 +0000 http://blogs.gnome.org/uraeus/2008/01/17/the-world-of-transcoding/#comment-1417 This would be a great project without a GUI to use with the on-the-fly transcoding option in MediaTomb. Using GStreamer and Python to automatically transcode any source into high quality output for the PS3 (or other target) and optionally use a GUI to create permanent copies as you've described. This would be a great project without a GUI to use with the on-the-fly transcoding option in MediaTomb. Using GStreamer and Python to automatically transcode any source into high quality output for the PS3 (or other target) and optionally use a GUI to create permanent copies as you’ve described.

]]> By: sil http://blogs.gnome.org/uraeus/2008/01/17/the-world-of-transcoding/#comment-1413 sil Wed, 23 Jan 2008 01:35:53 +0000 http://blogs.gnome.org/uraeus/2008/01/17/the-world-of-transcoding/#comment-1413 I'd love this. Love it. FFMpegX for OS X does this, and I'd really like it. I keep sitting down thinking about writing it, and then I remember that I'd have to spend my life thinking about how to build a gst pipeline with audioconverts and that sort of thing in and I give up. It'd be great if someone did this, though. I’d love this. Love it. FFMpegX for OS X does this, and I’d really like it. I keep sitting down thinking about writing it, and then I remember that I’d have to spend my life thinking about how to build a gst pipeline with audioconverts and that sort of thing in and I give up. It’d be great if someone did this, though.

]]> By: Martin Garton http://blogs.gnome.org/uraeus/2008/01/17/the-world-of-transcoding/#comment-1409 Martin Garton Mon, 21 Jan 2008 11:29:21 +0000 http://blogs.gnome.org/uraeus/2008/01/17/the-world-of-transcoding/#comment-1409 A tool called "oggconvert" by Tristan Brindle is like this. It doesn't have all the options, but the basics are there. A tool called “oggconvert” by Tristan Brindle is like this. It doesn’t have all the options, but the basics are there.

]]> By: tumbleweed http://blogs.gnome.org/uraeus/2008/01/17/the-world-of-transcoding/#comment-1408 tumbleweed Sun, 20 Jan 2008 08:17:23 +0000 http://blogs.gnome.org/uraeus/2008/01/17/the-world-of-transcoding/#comment-1408 Useful things you left out is the various bitrates, estimated / target output file size, and quality/speed trade-offs. Many devices that you need to transcode for only support a small range of bitrates. Obviously handbrake-like profiles should be bundled that include all known devices. If the movie is going to have to fit on your old, spare 256MB SD Card, then target size matters. If you are wanting a quick trans-code, while hanging off a wall socket at an airport, waiting for your flight to be called, quality/speed tradeoffs matter. Useful things you left out is the various bitrates, estimated / target output file size, and quality/speed trade-offs.

Many devices that you need to transcode for only support a small range of bitrates. Obviously handbrake-like profiles should be bundled that include all known devices.

If the movie is going to have to fit on your old, spare 256MB SD Card, then target size matters.

If you are wanting a quick trans-code, while hanging off a wall socket at an airport, waiting for your flight to be called, quality/speed tradeoffs matter.

]]> By: Peteris Krisjanis http://blogs.gnome.org/uraeus/2008/01/17/the-world-of-transcoding/#comment-1407 Peteris Krisjanis Sun, 20 Jan 2008 00:28:34 +0000 http://blogs.gnome.org/uraeus/2008/01/17/the-world-of-transcoding/#comment-1407 For testing purposes, wild scale application test suite for Gstreamer would be very nice. It is rather hard to fit all scenarios in used-every-day-app, but this suite could have references to such apps. For example, video seeking tests could have been taken from Pitivi, DVD ripping and other stuff from Thoggen, etc. It would also help app devs to make sure that their stuff won't broke with next Gstreamer release. I know it would be rather big work in the beginning, but it could definitely help lot of people later. For testing purposes, wild scale application test suite for Gstreamer would be very nice. It is rather hard to fit all scenarios in used-every-day-app, but this suite could have references to such apps. For example, video seeking tests could have been taken from Pitivi, DVD ripping and other stuff from Thoggen, etc.

It would also help app devs to make sure that their stuff won’t broke with next Gstreamer release. I know it would be rather big work in the beginning, but it could definitely help lot of people later.

]]> By: Luis http://blogs.gnome.org/uraeus/2008/01/17/the-world-of-transcoding/#comment-1406 Luis Sat, 19 Jan 2008 00:33:59 +0000 http://blogs.gnome.org/uraeus/2008/01/17/the-world-of-transcoding/#comment-1406 Did you try Avidemux? Seems like a good tool for the job. Did you try Avidemux? Seems like a good tool for the job.

]]> By: DJ Saltarelli http://blogs.gnome.org/uraeus/2008/01/17/the-world-of-transcoding/#comment-1405 DJ Saltarelli Fri, 18 Jan 2008 18:21:34 +0000 http://blogs.gnome.org/uraeus/2008/01/17/the-world-of-transcoding/#comment-1405 Christian- don't forget about Tivo and Tivo HD, which apparently likes to play transport stream mpeg2. I have a little linksys box with usb and openwrt+optware. With pyTivo I can serve mp3s and photos to the HD Tivo on it, but serving video is too slow because unless I transcode to the native mpeg2 TS format, the tivo won't like it (from what I understand anyway). I would really love to see someone take the ps2ts code from VLC and add that into a simple transcoder like you're describing (or make such a muxing option easy to use via gstreamer) so one could select PS or TS for the muxing option. Maybe I'm misinformed and it's really easier than I think. Anyhow, I look forward to testing your app. Best, /djs Christian- don’t forget about Tivo and Tivo HD, which apparently likes to play transport stream mpeg2. I have a little linksys box with usb and openwrt+optware. With pyTivo I can serve mp3s and photos to the HD Tivo on it, but serving video is too slow because unless I transcode to the native mpeg2 TS format, the tivo won’t like it (from what I understand anyway). I would really love to see someone take the ps2ts code from VLC and add that into a simple transcoder like you’re describing (or make such a muxing option easy to use via gstreamer) so one could select PS or TS for the muxing option. Maybe I’m misinformed and it’s really easier than I think. Anyhow, I look forward to testing your app. Best,

/djs

]]> By: Michael Kanis http://blogs.gnome.org/uraeus/2008/01/17/the-world-of-transcoding/#comment-1404 Michael Kanis Fri, 18 Jan 2008 14:03:42 +0000 http://blogs.gnome.org/uraeus/2008/01/17/the-world-of-transcoding/#comment-1404 Hi, perhaps you should take a look at Movic: http://movic.ir/ It's still in its beginnings and not based on GStreamer (but ffmpeg). It does a fairly good job for me and the GUI is very intuitive. Hi, perhaps you should take a look at Movic: http://movic.ir/
It’s still in its beginnings and not based on GStreamer (but ffmpeg). It does a fairly good job for me and the GUI is very intuitive.

]]> By: Patrick Ohearn http://blogs.gnome.org/uraeus/2008/01/17/the-world-of-transcoding/#comment-1403 Patrick Ohearn Fri, 18 Jan 2008 01:13:49 +0000 http://blogs.gnome.org/uraeus/2008/01/17/the-world-of-transcoding/#comment-1403 Jon that would be great, but not every mobile phone, web tablet, handheld support the same codec. First we need to collect data on what they do support then we can start on something like this. We also need to test what is the best codec to use, be it opensource or not. Jon that would be great, but not every mobile phone, web tablet, handheld support the same codec. First we need to collect data on what they do support then we can start on something like this.

We also need to test what is the best codec to use, be it opensource or not.

]]> By: Jon Cooper http://blogs.gnome.org/uraeus/2008/01/17/the-world-of-transcoding/#comment-1402 Jon Cooper Fri, 18 Jan 2008 00:00:33 +0000 http://blogs.gnome.org/uraeus/2008/01/17/the-world-of-transcoding/#comment-1402 I long for the day the "autorun" like feature offers to backup my DVD I've just inserted, or as a right-click option on media files in nautilus. One simple dialog, offering a range of output devices (HD panel, handheld console, mobile phone, web tablet, etc) and an audio selection (stereo, 5.1, 7.1) then a progress dialog (preferably part of mathusalem - whatever did happen to that). Simple, clean and intuitive. I don't want to know what codec, container, audio configuration, bitrate or scaling is used. Ah dreams, if only I had the knowledge to implement :) I long for the day the “autorun” like feature offers to backup my DVD I’ve just inserted, or as a right-click option on media files in nautilus. One simple dialog, offering a range of output devices (HD panel, handheld console, mobile phone, web tablet, etc) and an audio selection (stereo, 5.1, 7.1) then a progress dialog (preferably part of mathusalem - whatever did happen to that). Simple, clean and intuitive. I don’t want to know what codec, container, audio configuration, bitrate or scaling is used.

Ah dreams, if only I had the knowledge to implement :)

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